Thunder Scientific 2900 User manual

Quick Start Guide
Thunder Scientific Corporation
Model 2900 System Manual

Model 2900 Humidity Generation System
Document #SG2900 - Edition 1.8
Quick Start Guide

1
Model 2900 System Manual – Document #SG2900 - Edition 1.8 September 2019
Quick Start Guide
For full version of this manual click on the Help Menu located on the upper right corner of the screen
Or go to www.thunderscientific.com/tech_info/reference_manuals.html
1CONTENTS
2Getting Started 2
2.1 About .....................................................................................................................2
2.2 Notice..................................................................................................................... 3
2.3 Safety Information..................................................................................................3
2.3.1 Live Power Source .................................................................................. 3
2.3.2 Electrostatic Discharge............................................................................3
2.3.3 Compressed Gas...................................................................................... 3
2.3.4 Personal Protective Equipment ................................................................ 3
2.3.5 Safety Symbols .......................................................................................4
2.4 Technical Support...................................................................................................4
2.5 License Agreement ................................................................................................. 4
2.6 Warranty ................................................................................................................6
2.7 Copyright ...............................................................................................................6
2.8 Trademarks.............................................................................................................6
2.9 Specifications .........................................................................................................7
2.10 Uncertainty ............................................................................................................8
2.11 Facility Requirements ............................................................................................. 9
2.11.1 Environment ...........................................................................................9
2.11.2 Floor Space.............................................................................................9
2.11.3 Power...................................................................................................... 9
2.11.4 Air Supply ..............................................................................................9
2.11.5 Distilled Water Supply ............................................................................ 9
2.12 Installation............................................................................................................ 10
2.12.1 Uncrating.............................................................................................. 10
2.12.2 Positioning............................................................................................ 10
2.12.3 Chamber Fluid ...................................................................................... 10
2.12.4 Reservoir Initial Filling Procedure ......................................................... 11
2.12.5 Setting Supply Pressure Regulator......................................................... 11
2.13 Quick Start ........................................................................................................... 12
2.13.1 Power-Up.............................................................................................. 12
2.13.2 Loading Screen ..................................................................................... 13
2.13.3 ControLog Screen ................................................................................. 14
2.13.4 Control Parameters................................................................................ 15
2.13.5 Control Modes ...................................................................................... 17
2.13.6 Generating and Shutting down............................................................... 18
2.13.7 Power-Off............................................................................................. 19
2.13.8 Set Date and Time................................................................................. 20
2.13.9 Help...................................................................................................... 21
Reference Drawings 18D29901-2,3 &4 + 18D29909-1, 2

2
Model 2900 System Manual – Document #SG2900 - Edition 1.8 September 2019
2GETTING STARTED
This section will provide the user with information about the Model 2900 humidity generator, where to
obtain technical support, software license agreement, specifications, uncertainty, facility requirements
and installation. Following sections will provide further details on how to use and operate the Model
2900 generator using the ControLog software.
Note -All pressures are absolute unless noted otherwise.
2.1 ABOUT
The Thunder Scientific Model 2900 Humidity Generator is capable of producing known humidity
values using the fundamental, NIST proven, "two-pressure" principle. The Model 2900 uses this
fundamental “two-pressure” principle to continuously supply a known relative humidity, dew point,
frost point, parts per million, or other calculated value for instrument calibration and evaluation as
well as precision environmental testing.
The Model 2900 humidity generator encompasses a high-performance stand-alone Data Acquisition
Computer that performs all functions required for humidity generation and control and a second
dedicated Human Machine Interface (HMI) computer that runs ControLog. ControLog is a software
application that fully automates the operation of the Model 2900 humidity generator and allows
various device connections through a number of different interfaces. Data from the generator and
connected device or devices is automatically retrieved and stored for viewing in either numerical or
graphical format in real time or post process. Data can be transferred off the system via a USB drive
for further viewing, post processing and printing. The ControLog software also provides the primary
interface to the operator via the multi-point touch LCD and keyboard.
Key features of the of the ControLog software are:
•ControLog stores data into individual data sheets (tab). Each data sheet contains a
spreadsheet type view that consists of a date/time stamp and the measured data items
corresponding to that date/time stamp. Data sheets consist of three similar but different
types: Device Data, File Data and Data Summary. Each type has the same spreadsheet type
view and operation, but all three have different data sources.
•Graphing is a powerful tool used to view previously recorded data or to monitor the current
data in real-time. The graph works hand in hand with the data sheets. While the generator is
in operation, data sheets store the most recent data points from the generator and or
connected devices at the desired interval. A graph can be used to create a visual picture of
this stored data.
•The Auto Profiling feature is very similar to the Generate mode with the main exception that
profiling relies on a predefined list of setpoints referred to as a profile. The user configurable
profile is used as ControLog's road map during Auto Profile operation. It defines which
setpoint values to go to, at what rate to go from one setpoint to another, and how long to stay
at a specific setpoint before moving to the next setpoint.
•ControLog supports a customizable interface that works with most devices. ControLog will
allow the user to create a new device connection using the “Connection Wizard” or open
previously saved connections. The wizard will open a separate dialog window containing

3
Model 2900 System Manual – Document #SG2900 - Edition 1.8 September 2019
various steps that will guide the user in defining the communication required to receive the
desired data items from the device. The user can create as many (up to 60) or as few data
items as they see fit for any one device. Each data item can be uniquely named and once
connected will be recorded in its own data sheet. ControLog also allows the user to save
these interfaces for future use. The “Connection Wizard” allows the user to step through the
connection configuration. Using the “Next” and “Back” buttons the user is allowed to
progress through the connection configuration steps. At any time, the user may cancel the
new connection or opening of a connection by selecting the “Cancel” button. Once the last
step has been completed the “Finish” button will be available to complete the new connection.
2.2 NOTICE
The specifications listed and the information contained in this document is subject to change without
notice. Screen shots shown in this document may differ slightly from the actual product and are given
to show functionality of the examples, procedures and program. Thunder Scientific Corporation makes
no warranties, either express or implied, regarding the examples, procedures and program, or the
fitness of these examples, procedures or program for a particular purpose. The examples, procedures
and program are made available solely on an "as is" basis and the entire risk as to their quality and
performance rests with the user. Thunder Scientific Corporation shall not be liable for any incidental or
consequential damages in connection with or arising out of the furnishing, use, or performance of the
examples, procedures or program.
2.3 SAFETY INFORMATION
Important safety guidelines need to be observed when operating this equipment. Precautions are highly
advisable so that no personal injury will occur during the operation and maintenance of the system.
Observation of local and national regulations must be adhered to regarding safety standards.
2.3.1 Live Power Source
Warning! Make sure all power sources are turned off before making internal adjustments or replacing
any components. Only authorized technicians should perform any maintenance or repairs to equipment.
2.3.2 Electrostatic Discharge
Caution! Electrostatic discharge (ESD) could possibly damage or destroy solid-stat parts when exposed
to static electric discharges. Be aware because electrostatic discharges may not be seen, felt or heard at
levels less than 4,000 volts.
2.3.3 Compressed Gas
Compressed gas is used on this system and if not properly vented may create an environment where the
state of foreign matter may be propelled. Proper safety precautions must be fallowed when applying
any pressure to the system. Before applying any pressure to the system, ensure that all pneumatic
connections are properly secured and tightened. Make sure all pressure settings are set to the proper
specifications before operation, testing, calibration or maintenance is performed.
2.3.4 Personal Protective Equipment
Safety glasses must be worn when preforming any maintenance, repairs or calibration when system
panels have been removed. Gloves may be needed on some maintenance or repairs.

4
Model 2900 System Manual – Document #SG2900 - Edition 1.8 September 2019
2.3.5 Safety Symbols
Symbols used in this manual for safety and other disciplines can be found in table 1-1.
Safety terminology used for identification of any safety conditions are as follows:
Warning indicates a potential hazard may exist and the user should be extremely careful.
Caution!identifies a condition or action that may cause damage to the system or the user.
Symbol
Description
The equipment has this symbol displayed
and indicates that the equipment meets
the requirements of the European safety
directives.
This symbol is shown from the WEEE
directive and indicates do not dispose of
this product in any municipal waste area.
This symbol means Caution should be
observed or important information.
This symbol indicates a potential shock
hazard may exist.
This symbol means Earth Ground.
Table 1-1
2.4 TECHNICAL SUPPORT
If the user requires assistance with any aspect of the 2900 Humidity Generating System or the
ControLog application, technical support can be obtained by contacting Thunder Scientific Corporation
by any of the following means:
Web: www.ThunderScientific.com
Email: [e-mail]
Tel : [phone]
FAX : [phone]
2.5 LICENSE AGREEMENT
THIS IS A LEGAL AGREEMENT BETWEEN YOU, THE END USER, AND THUNDER SCIENTIFIC
CORPORATION ("TSC"). THE ENCLOSED THUNDER SCIENTIFIC CORPORATION SOFTWARE
PROGRAM (THE "SOFTWARE ") IS LICENSED BY THUNDER SCIENTIFIC CORPORATION TO THE
ORIGINAL CUSTOMER AND ANY SUBSEQUENT TRANSFEREE OF THE PRODUCT FOR USE ONLY ON
THE TERMS SET FORTH HERE. PLEASE READ THIS LICENSE AGREEMENT. IF YOU DO NOT AGREE
TO THESE TERMS, RETURN THE FULL PRODUCT WITH PROOF OF PURCHASE WITHIN 30 DAYS FOR
A FULL REFUND.

5
Model 2900 System Manual – Document #SG2900 - Edition 1.8 September 2019
• GRANT OF LICENSE. TSC grants to you the right to use one copy of the enclosed SOFTWARE on a single
terminal connected to a single computer (i.e. single CPU) or to a network server. If you install the SOFTWARE on
a network server, you must purchase a separate copy of the SOFTWARE for each computer terminal that will be
used to operate the SOFTWARE. If the anticipated number of users of the SOFTWARE will exceed the number of
applicable Licenses, then you must have a reasonable mechanism in place to ensure that the number of persons using
the SOFTWARE concurrently does not exceed the number of Licenses. If the SOFTWARE is permanently installed
on the hard disk or other storage device of a computer (other than a network server) and one person uses that
computer more than 80% of the time, then that person may also use the SOFTWARE on a portable or home
computer.
• COPYRIGHT. The SOFTWARE is owned by TSC and is protected by United States copyright laws and
international treaty provisions. You may either (a) make two copies of the SOFTWARE solely for backup or
archival purposes provided that you reproduce all copyright and other proprietary notices that are on the original
copy of the SOFTWARE provided to you, or (b) transfer the SOFTWARE to a single hard disk provided you keep
the original solely for backup or archival purpose. You may not copy the written materials accompanying the
SOFTWARE.
• OTHER RESTRICTIONS. You may not rent or lease the SOFTWARE, but you may transfer the SOFTWARE
and accompanying written materials on a permanent basis provided you retain no copies and the recipient agrees to
the terms of this Agreement. You may not reverse engineer, decompile, disassemble, or create derivative works
from the SOFTWARE.
SOFTWARE and written materials
• GOVERNMENT LICENSEE. If you are acquiring the SOFTWARE on behalf of any unit or agency of the United
States Government, the following provisions apply:
The Government acknowledges TSC's representation that the SOFTWARE and its documentation were developed at
private expense and no part of them is in the public domain.
The Government acknowledges TSC's representation that the SOFTWARE is "Restricted Computer Software" as
that term is defined in Clause 52.227-19 of the Federal Acquisition Regulations (FAR) and is "Commercial
Computer Software" as that term is defined in Subpart 227.471 of the Department of Defense Federal Acquisition
Regulations Supplement (DFARS).
The Government agrees that:
(i) If the SOFTWARE is supplied to the Department of Defense (DoD), the SOFTWARE is classified as
"Commercial Computer Software" and the Government is acquiring only "restricted rights" in the
SOFTWARE and its documentation as that term is defined in Clause 252.227-7013(c) (1) of the DFARS,
and
(ii) If the SOFTWARE is supplied to any unit or agency of the United States Government other than DoD,
the Government's rights in the SOFTWARE and its documentation will be as defined in Clause 52.227-19
(c) (2) of the FAR.
• RESTRICTED RIGHTS LEGEND. Use, duplication, or disclosure by the Government is subject to restrictions as
set forth in subparagraph (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at DFARS
252.227-7013. Thunder Scientific Corporation, 623 Wyoming SE, Albuquerque, NM 87123.
• EXPORT LAW ASSURANCES. You acknowledge and agree that the SOFTWARE is subject to restrictions and
controls imposed by the United States Export Administration Act (the "Act") and the regulations thereunder. You
agree and certify that neither the SOFTWARE nor any direct product thereof is being or will be acquired, shipped,
transferred or re-exported, directly or indirectly, into any country prohibited by the Act and the regulations
thereunder or will be used for any purpose prohibited by the same.
• GENERAL. This Agreement will be governed by the laws of the State of New Mexico, except for that body of
law dealing with conflicts of law.
Should you have any questions concerning this Agreement, or if you desire to contact TSC for any reason, please
write: Thunder Scientific Corporation, 623 Wyoming NE, Albuquerque, NM 87123

6
Model 2900 System Manual – Document #SG2900 - Edition 1.8 September 2019
2.6 WARRANTY
Thunder Scientific Corporation (TSC) warrants, to the Buyer, the Product manufactured by TSC to
be free of defects in material and workmanship under normal use and service and to be free from
inadequate mechanical design when operated within the specified design limitations for a period of
one year from date of acceptance. TSC's obligation under this warranty shall be limited to the
following: The Product is returned to TSC with transportation charges prepaid and that TSC's
examination reveals the Product to be defective. TSC, at its option, shall either refund to the Buyer
the purchase price of the product or repair or replace at TSC's plant, any part or parts of the Product
which is or are defective. This warranty shall not apply to any Product which has been maintained,
handled, stored, repaired or altered in any manner, or by anyone other than an authorized TSC
representative, so as to affect adversely such Product or which has been subject to improper
installation, misuse, negligence, accident or corrosion. THIS WARRANTY IS EXCLUSIVE AND
IN LIEU OF ANY WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE OR ANY OTHER WARRANTY, WHETHER EXPRESS OR IMPLIED, AND ALL
OTHER LIABILITIES AND OBLIGATIONS ON THE PART OF TSC; TSC SHALL NOT BE
LIABLE FOR ANY OTHER CLAIMS OR DAMAGES, EITHER DIRECT OR
CONSEQUENTIAL, ARISING DIRECTLY OR INDIRECTLY OUT OF SUPPLYING THE
PRODUCT. All warranties, express or implied, with respect to any device or component not
manufactured by TSC but incorporated into its Product are the responsibility of the original
manufacturer and shall not affect or apply to TSC.
2.7 COPYRIGHT
©2009-2020 Thunder Scientific Corporation
623 Wyoming Blvd. SE
Albuquerque, New Mexico 87123, USA
This document contains proprietary information which is protected by copyright. All rights are reserved.
No part of this document may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, for any purpose without the prior written consent of
Thunder Scientific Corporation.
2.8 TRADEMARKS
ControLog is a trademark of Thunder Scientific Corporation.
HumiCalc is a trademark of Thunder Scientific Corporation.
THUNDER SCIENTIFIC is the registered trademark of Thunder Scientific Corporation
®
®
®
MADE IN USA

7
Model 2900 System Manual – Document #SG2900 - Edition 1.8 September 2019
2.9 SPECIFICATIONS
Relative Humidity Range: ......................................................................... 10 to 95 %RH, 10 to 40 L/min
Relative Humidity Range:1....................................................................... 95 to 98 %RH, 10 to 20 L/min
Frost Point Temperature Range: ....................................................................................... -33.60 to 0 °C
Dew Point Temperature Range: ..................................................................................... -36.94 to 70 °C
Chamber Temperature Range: 2.......................................................................................... -10 to 72 °C
Chamber Temperature Control Stability: 3................................................................................. 0.002 °C
Chamber Temperature Uniformity: 4......................................................................................... <0.04 °C
Chamber Temperature Heating Rate: from -10 to 72 °C............................... 0.5 °C per Minute (average)
Chamber Temperature Cooling Rate: from 72 to 0 °C .................................. 0.5 °C per Minute (average)
Chamber Temperature Cooling Rate: from 0 to -10 °C ................................. 0.2 °C per Minute (average)
Temperature Specification: ....................................................................................................... 0.027 °C
Gas Type: ........................................................................................................................Air or Nitrogen
Gas Pressure Rating: (MAWP)................................................................................................... 175 psiG
Gas Flow Rate Range: ...................................................................................................... 10 to 50 L/min
Gas Flow Rate Specification:............................................................................................5% of full scale
Saturation Pressure Range:..................................................................................... Ambient to 160 psiA
Saturation Pressure Specification: ............................................................................. 0.02% of full scale
Test Chamber Pressure Range: ..................................................................................................Ambient
Test Chamber Pressure Specification:...........................................................................0.02% of reading
Supply Pressure Range: .......................................................................................... Ambient to 150 psiG
Supply Pressure Specification: .................................................................................................... ±1 psiG
Display Resolution:........................................................................................................................ 0.001
Test Chamber Dimensions:........................................12” x 12” x 10” (304.8 mm x 304.8 mm x 254 mm)
Physical Dimensions: ..................................... 22” H x 36” W x 23” D (558.8 mm x 432 mm x 584.2 mm)
1The system will limit mass flow rate to 20 L/min for %RH greater than 95.
2Using glycol/water as the temperature heat transfer fluid from -10 to 72 °C. Note: the 2900 can only operate for
a finite amount of time at or below 0 °C
3Temperature Control Stability is defined as the standard deviation over a 10-minute period, as measured by the
saturation temperature control sensor after being at point for 60 minutes.
4Chamber Temperature Uniformity is defined as the maximum temperature difference between any two locations
at a single point in time. Locations are within one inch of the chamber wall and within 2.5 inches of the chamber
door. Using a minimum chamber fan speed of 25% for a temperature range of -10 °C to 72 ° when using fluid
jacket door option and ±10 °C from ambient when not.

8
Model 2900 System Manual – Document #SG2900 - Edition 1.8 September 2019
2.10 UNCERTAINTY 1
RH Uncertainty: 10 to 95 %RH, 0 to 70 °C, 10 to 40 L/min...............................................0.5% of reading
RH Uncertainty: 95 to 98 %RH, 0 to 70 °C, 10 to 20 L/min...............................................0.5% of reading
Dew/Frost Point Uncertainty: < 0.01 °C, 10 to 40 L/min...............................................................0.05 °C
Dew Point Uncertainty: 0.01 to 70 °C, 10 to 40 L/min ..................................................................0.08 °C
Temperature Uncertainty: -10 to 72 °C ...................................................................................... 0.031 °C
1Chamber pressure at 1 atmosphere, Uncertainty values represent an expanded uncertainty using a coverage
factor, k=2, at an approximate level of confidence of 95%. Uncertainty is not specified at saturation temperatures
below 0 °C or at flow rates below 10 L/min. Uncertainty is based on the worst-case value from the 2900
uncertainty analysis.

9
Model 2900 System Manual – Document #SG2900 - Edition 1.8 September 2019
2.11 FACILITY REQUIREMENTS
2.11.1 Environment
Operating Temperature: ...................................................................................................... 15 to 30 °C
Storage Temperature: ........................................................................................................... 0 to 50 °C
Humidity: ................................................................................................ 5 to 95% RH Non-condensing
2.11.2 Floor Space
A bench and/or floor, capable of supporting approximately 300 pounds, with a minimum space of 27"
(0.686m) deep x 43" (1.09m) wide.
Allow an additional 20" (0.508m) in width for clearance, if possible, to allow complete opening of the
chamber door and access to the test ports.
Refer to drawings: 18D29901-2, 18D29910-1
2.11.3 Power
Electrical Power: ................................................................................. 220/230 V~, 10 A, 1 Ø, 50/60 Hz
Gas Supply Maximum Inlet Pressure: .................................................................... 175 psiG @ 50 L/min
2.11.4 Air Supply
When not using the pneumatic cart, a clean, oil free instrument air supply operating at a @ 165 psiG and
50 L/m is required. The air supply should be filtered to a particle size of 0.5 microns or less, a
hydrocarbon content of 1 PPM or less, with a pressure dewpoint of 15 °C or less. Regulated supply
pressure other than recommended (175 psiG maximum) is acceptable but may limit the lowest humidity
obtainable from the generator and will require an internal pressure regulator (REG) adjustment.
Refer to section 2.12.5 Setting Supply Pressure Regulator for more information on adjusting the internal
pressure regulator (REG).
2.11.5 Distilled Water Supply
One gallon (3.8 liters) of double distilled water per fill. The one-gallon supply can last from 8 hours to
more than 500 hours of use depending upon the temperature and humidity at which the generator is
operated (reference section 13.3.4). During operation near ambient temperature and 50% RH, one
gallon should last for approximately 200 hours.

10
Model 2900 System Manual – Document #SG2900 - Edition 1.8 September 2019
2.12 INSTALLATION
2.12.1 Uncrating
Before uncrating, carefully inspect the crate and skid to be certain the unit was not subjected to damage.
If there is damage, proceed no further and notify your inspection department and the shipping agent.
If the crate appears satisfactory:
1. Remove steel strapping.
2. Using "Clip Removal Tool" or thin pry-bar, remove top cover clips then remove top panel.
3. One panel at a time, remove the panel clips then remove panel.
4. Remove polyethylene covering from unit.
5. Inspect for any visible damage.
6. Remove any/all accessory boxes.
7. Using forklift or another suitable lifting device, lift unit from skid and place on the 2900 cart or
instrument bench.
CAUTION!
BEFORE APPROACHING THE EQUIPMENT WITH THE FORKLIFT,
VISUALLY LOCATE ANY HARDWARE WHICH MIGHT PROJECT
INTO THE PATH OF THE FORKS. PLACE FORKS AS WIDE AS
POSSIBLE TO AVOID DAMAGE TO THE FRAME.
8. The unit may now be rolled to its point of installation.
2.12.2 Positioning
Position the system to have access to all sides of the console. Remove cover panels and inspect for any
visible damage that might have occurred during shipment.
CAUTION!
ALWAYS USE THE FILE>TURN OFF COMMAND TO PROPERLY EXIT THE SOFTWARE AND
SHUTDOWN THE COMPUTERS SO THAT THE MAIN POWER SWITCH CAN BE SWITCHED OFF.
2.12.3 Chamber Fluid
Temperature conditioning of the Model 2900 test chamber utilizes a mixture of propylene glycol and
water as a heat transfer fluid. This fluid is circulated by a magnetically coupled centrifugal pump through
the refrigeration and heating system and the fluid shell surrounding the test chamber.
2.12.3.1 Chamber Fluid Filling Procedure
1. Ensure main power switch is OFF.
2. Remove top console panel.
3. Locate fluid fill port (under insulation and labeled "Fluid Fill Port").
4. Remove "Red" cap and insert funnel into fluid fill port.
5. Add 2 gallons of 70% propylene glycol. Fill with water until level is approximately 1" (25.4
mm) below the bottom of the fill port or until level touches funnel nozzle tip.

11
Model 2900 System Manual – Document #SG2900 - Edition 1.8 September 2019
6. Remove funnel and replace fluid fill port cap and insulation.
7. Replace top console panel.
Refer to drawings: 18D29901-1, 18D29901-4, 18D29909-1
2.12.3.2 Chamber Fluid Draining Procedure
1. Ensure main power switch is OFF.
2. Remove rear console panel.
3. Locate drain hose in the lower left rear corner of the generator (when looking at the back of
the generator).
4. Extend hose, remove drain hose cap and empty the chamber fluid into a clean container
with a minimum size of 4 gallons. Save the chamber fluid for refilling.
5. To restore hose: grasp hose and rotate counterclockwise ½ turn while pushing hose into left
side storage cavity.
6. Replace rear console panel
Refer to drawings: 18D29901-1, 18D29901-3, 18D29909-2
2.12.4 Reservoir Initial Filling Procedure
The reservoir requires an initial filling prior to first use, then periodic filling thereafter.
Refer to section 5.1 Water Reservoir Level for detailed instruction on how to fill the reservoir.
2.12.5 Setting Supply Pressure Regulator
The supply pressure must be regulated to assure proper control and operation. The goal of the
regulation is to remove the spikes that occur during air supply generation.
Note –It is always recommended to double regulate the air supply; once at the supply and again
at the 2900.
Adjust the 2900’s internal pressure regulator (REG) to 10 psiG below the supply pressure, but never
above 150 psiG. For example, if the supply pressure indicates 165 psiG then adjust the internal pressure
regulator to 150 psiG. If the supply pressure indicates 155 psiG then adjust the internal pressure
regulator to 145 psiG (10 psiG below). For the best results operate the generator in run mode at the
default flow rate to assure the regulator adjustment corrects for any pressure drop caused by the flow
rate.
1. Open the Supply Pressure Dialog by selecting “Supply Pressure” from the Utilities Menu Tab
2. Using a #6 or #8 straight blade screwdriver, rotate stem clockwise to increase pressure and
counterclockwise to decrease pressure while monitoring the supply pressure dialog window.
Refer to drawings: 18D29901-1, 18D29901-3, 18D29901-8

12
Model 2900 System Manual – Document #SG2900 - Edition 1.8 September 2019
2.13 QUICK START
This section will provide the user a quick start on operating the generator. For detailed information on
operating the generator please refer to section 4 ControLog Interface.
CAUTION!
DO NOT OPERATE THE GENERATOR WITHOUT CHAMBER
FLUID.
2.13.1 Power-Up
To Power-Up the generator perform the following steps:
•Verify that the air supply connection has been made.
oIf using the Series ACS2520 Air Compressor System (ACS)1verify the following:
The On/Off valve is open (handle inline).
The AC power cable is connected to the ACS box.
The remote air compressor control cable is connected from ACS box to
generator.
The Remote/Manual switch on the left side of the ACS box is in the Remote
position.
Toggle the power switch located on the left side of the ACS box to ON.
Note –When the Remote/Manual switch is in the Remote position the ACS compressor will not
run when first switched to ON. The compressor is remotely controlled by the 2900 and will not
start until the user requests an operation that requires supply pressure.
oIf using another air source, verify the following:
Supply is on and properly regulated.
•Verify that AC power cable is connected to the generator.
•Toggle the power switch located at the lower right rear of generator to ON. The generator will
begin to boot up.
1Refer to Thunder Scientific’s website www.thunderscientific.com for the ACS2520 manual and more information
on the ACS2520.

13
Model 2900 System Manual – Document #SG2900 - Edition 1.8 September 2019
2.13.2 Loading Screen
After the system boots the generator will show a loading screen which will indicate the status of the
loading process and will also show the software version of the generator.

14
Model 2900 System Manual – Document #SG2900 - Edition 1.8 September 2019
2.13.3 ControLog Screen
Upon completion of the loading process the generator will show the main ControLog page and a dialog
showing the status of establishing communication with the generator.
Once communication with the generator is established the generator’s parameter and data tabs will be
displayed.

15
Model 2900 System Manual – Document #SG2900 - Edition 1.8 September 2019
2.13.4 Control Parameters
The Parameter Tab Group is located on the left side of the application and contains a parameter tab for
each connected device. The 2900 Parameters contain all the control and measurement parameters
critical to the operation of the humidity generator.
Scrolling the Parameters
Each Parameter Tab can be scrolled up and down to show additional parameters.

16
Model 2900 System Manual – Document #SG2900 - Edition 1.8 September 2019
2.13.4.1 Setpoint Tile
The Setpoint Tiles allow the user to control the operation of the humidity generator by changing the
desired setpoint that the generator will control to. The Tiles contain 5 key parts; a header with the
Parameter Name, the Actual Value, the real-time Uncertainty Value, the Setpoint Value and the Unit the
values are displayed in. Each setpoint tile has a colored bar to allow quick indication of the what the tile
is displaying and in turn what the system is controlling. Blue is for the humidity that is being generated,
red is for the temperature that the system is controlling to and green is for the flow rate the system is
generating at.
2.13.4.1.1 Changing Setpoints
To change a setpoint, click on the setpoint tile that you would like to change. A setpoint entry box will
appear. For example, to change the Percent Relative Humidity setpoint click on the %RH setpoint tile.
Enter the new value into the Setpoint Entry box and select Ok. Notice that the Percent Relative Humidity
setpoint value updates to the new value and the actual values begin moving toward the new setpoint.

17
Model 2900 System Manual – Document #SG2900 - Edition 1.8 September 2019
2.13.4.2 Value Tile
The Value Tiles display an actual value of a given parameter to the user. The Tiles contain 3 key parts; a
header with the Parameter Name, the Actual Value and the Unit the value is displayed in.
2.13.5 Control Modes
The user can change the operating mode of the 2900 by selecting from the drop-down menu within the
Mode group on the Generator’s Operation menu tab.
The drop-down allows the user to select between %RH, Frost Point, Dew Point, PPMv, PPMw, and
Saturation Pressure.

18
Model 2900 System Manual – Document #SG2900 - Edition 1.8 September 2019
2.13.6 Generating and Shutting down
The Run Menu allows the user to run the 2900 manually.
The user can select to Generate or Shutdown.
2.13.6.1 Generate Mode
Selecting Generate from the run menu commands the 2900 into generate mode. When in the Generate
mode of operation, the system will control at the currently entered setpoints. Anytime a setpoint is
changed, the system immediately begins adjusting to that new value, and will control at the new point.
The Generate mode also allows you to change the humidity control mode at any time. For instance, the
system may be controlling %RH, then you may immediately switch to Dew Point control mode.
2.13.6.2 Shutdown
Selecting Shutdown from the run menu commands the 2900 to shutdown. The 2900 may be shutdown
whenever it is generating. When stopped, all system functions shutdown, pressure is vented, and the
idle Control/Display screen is shown. During this idle time, when the 2900 is stopped, gas is not flowing
through the generator.